Sadly, I think many critics of Butler will seize on the fact that he is now a peace and justice activist. But still, for someone like me, Butler makes many very valid points without ever once questioning McCain's service to this country.
But how very odd, two men, both graduates of the Naval academy, both ending up being POW's, and one used self advertisement of his POW status to start a political career, and the other stayed in the Navy without exploiting his POW status. But post Navy career, both ended up with quite different thinking about the world.
I am sure both of them would meet my sniff test of good people to sit down and have a beer with on the back porch. McCain would probably be more colorful and entertaining, but I think I would learn far more talking to Butler. And in terms of a sniff test of which you would rather share a foxhole with in a firefight, I think I would cast my lot with a Butler also